J Korean Acad Prosthodont.  2019 Apr;57(2):150-159. 10.4047/jkap.2019.57.2.150.

An assessment of accuracy of half-guided implant surgery using implant surgical guide: A case report

• Kim C
• Lee W
• Kwon HB

• KMID: 2444184
• DOI: http://doi.org/10.4047/jkap.2019.57.2.150

Abstract

Nowadays, dental implant is one of the widely used treatment options for edentulous patients. Recently, a method of improving the accuracy of implant surgery using an implant surgical guide has been introduced and widely used in order to accurately place the implant in a proper position. Full-guided and half-guided implant surgery can be distinguished according to the level of surgical guide application during the implant surgery. It is true that full-guided implant surgery exhibits higher accuracy, but half-guided implant surgery is often performed in a clinical situation due to the factors such as the circumstances of the operation. A partially edentulous patient who lost teeth due to tooth fracture and periodontal disease was treated using implant and fixed prosthesis. Half-guided implant surgery was performed using an implant surgical guide during implant surgery, the accuracy of implant placement was analyzed.

Keyword

Dental implants; Computer-assisted; Jaw, Edentulous, Partially

MeSH Terms

Dental Implants
Humans
Jaw, Edentulous, Partially
Methods
Periodontal Diseases
Prostheses and Implants
Tooth
Tooth Fractures
Dental Implants

Figure

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  Fig. 1 Clinical intraoral photographs at the initial visit. (A) Maxillary occlusal view, (B) Right side lateral view, (C) Frontal view, (D) Left side lateral view, and (E) Mandibular occlusal view.

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  Fig. 2 Panoramic radiograph at the initial visit.

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  Fig. 3 Intraoral photographs after tooth extraction and old prosthesis removal. (A) Right side lateral view, (B) Frontal view, and (C) Left side lateral view.

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  Fig. 4 Pre-op CBCT and STL file image of the maxillary study cast. (A) CBCT image, (B) Maxillary study cast image.

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  Fig. 5 Implant surgery planning. (A) CBCT and 3D scan data matching, (B) Transverse view, (C) Coronal view, and (D) Sagittal view.

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  Fig. 6 Confirmation of the fit of the surgical guide.

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  Fig. 7 Guided implant surgery and impression taking. (A) Guided implant surgery on the maxilla, (B) Maxillary area impression with impression copings, (C) Maxillary area digital impression with scanbody, (D) Guided implant surgery on the mandible, (E) Mandibular area impression with impression copings, and (F) Mandibular area digital impression with scanbody.

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  Fig. 8 Custom abutments and provisional prosthesis delivery. (A) Custom abutment delivery, (B) Provisional prosthesis delivery.

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  Fig. 9 Facebow transfer and interocclusal records. (A) Maxillary cast mounting procedure, (B) and (C) Eccentric interocclusal records.

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  Fig. 10 Definitive impression taking and cross mounting. (A) Mandibular occlusal view, (B) Maxillary occlusal view, and (C) Cross mounting.

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  Fig. 11 Definitive restorations. (A) Right side lateral view, (B) Frontal view, and (C) Left side lateral view.

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  Fig. 12 Schematic drawing of an assessment of guided implant surgery accuracy.

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  Fig. 13 Measurement of three parameters between planned and placed implants.

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  Fig. 14 Coronal deviation in distance between planned and placed implants. Extraoral, result of comparison between planning file and extraoral scanner scan file (left vertical axis); Intraoral, result of comparison between planning file and intraoral scanner scan file (left vertical axis); Difference, The absolute value of the difference between the extraoral value and intraoral value (right vertical axis).

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  Fig. 15 Apical deviation in distance between planned and placed implants. Extraoral, result of comparison between planning file and extraoral scanner scan file (left vertical axis); Intraoral, result of comparison between planning file and intraoral scanner scan file (left vertical axis); Difference, The absolute value of the difference between the extraoral value and intraoral value (right vertical axis).

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  Fig. 16 Angular deviation between planned and placed implants. Extraoral, result of comparison between planning file and extraoral scanner scan file (left vertical axis); Intraoral, result of comparison between planning file and intraoral scanner scan file (left vertical axis); Difference, The absolute value of the difference between the extraoral value and intraoral value (right vertical axis).

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